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Aliasing Demonstration
- Demonstrates principles of aliasing, spectral folding, and the reduction of aliasing errors with an analog low-pass (anti-alias) filter.
AC-Coupling Demonstration
- Demonstrates the effect of AC-Coupling a sine and square signal with and without offset.
Convolution Demonstration
- Demonstrates the Convolution Process.
dB Calculator
- Calculates magnitude ratios and their equivalent decibels.
Digitizing Error Demonstration
- Demonstrates the effect of digitization of data.
Distortion Demonstration
- Demonstrates the effects of several types of non-linearity on the time history and spectrum of a sine wave.
DoF-Chi² Calculator
- Calculates a table of Gaussian-random-calculation reliability as a function of Confidence and Degrees of Freedom.
Filter & Alias Analyzer
- Provides a general alias-protection analysis for a variety of popular analog low-pass filters.
Fourier Transform Demonstration
- Demonstrates the calculations and the resulting filter shape of a single Fourier-Transform filter at 10 waves/buffer.
Interpolation Demonstration
- Demonstrates the use of interpolation/resampling on a tachometer pulse acquired at 100,000 samples/second. The program reconstructs the time history by calculating the number of points requested between the original (acquired) values.
Leakage Demonstration
- Demonstrates leakage of the Fourier-Transform filtering operation and the effect of applying several windows to the input time history.
Polynomial Fit Demonstration
- Demonstrates the fitting of data sets (including calibrations) with Polynomial Curves.
Pulse-Alias Demonstration
- Demonstrates the effect of undersampling (violating Shannon’s rule) on a Pulse Time History.
Shock-Alias Demonstration
- Demonstrates the effect of undersampling (violating Shannon’s rule) on a broadband Pyroshock Time History.
Shock Filter Effects Demonstration
- Demonstrates the effect of low-pass filtering on a high-frequency shock time history and the need for large headroom for shock and other tests that have significant “out-of-band” response.
Sigma Delta ADC Demonstration
- Demonstrates the Sigma-Delta Analog-to-Digital Converter process.
Signal-Sound Demonstration
- Demonstrates audibly and graphically (in time and spectral form) a variety of waveforms.
Spectral Plot Format Demonstration
- Demonstrates the effect of selecting linear or logarithmic frequency scales and linear, logarithmic, or dB magnitude scales on spectral plots.
Square Wave Fourier and Butterworth Filter Demonstration
- Demonstrates the effect of several “perfect” low-pass filters on a square wave.

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